Upgrading My RYOBI 480ex Riding Mower Battery to LiFePO4
Submitted by admin on Wed, 04/30/2025 - 8:17amDear reader, I'd like to take you on a journey-- the same one I have just been on-- that started with trying to figure out why my electric riding lawnmower (the RYOBI RY48111, confusingly also named the 480ex, suddenly stopped working.
Let me start by saying that I love that mower. Yes, it's more expensive than a gas-powered one, but I never have to run out and buy ethanol-free dinosaur juice that's going to stink up my car, I never have to change any spark plugs or change the oil and oil filter. I don't have to worry about an alternator breaking, nor do I have to "stabilize" the gasoline during the winter.
With an electric mower, you just plug it in to charge up the batteries, then away you go. And the 480ex was every bit as powerful as a gas mower. I easily cut the front and back on a single charge with plenty to spare.
Until one day, about 2 weeks ago...